In the Memo or "For" section, write "USCIS I-765" and your SEVIS ID number, found in the in the upper left-hand corner of your I-20. You must mail your check, bank draft, or money order together with your benefit request form.However, you can file many USCIS forms online. To fill out the money order, you will need to "Pay to" U.S. Department of Homeland Security. Use this form to request a fee waiver (or submit a written request) for certain immigration forms and services based on a demonstrated inability to pay. Things to keep in mind when applying for OPT: • The ISSO recommends filing online. • Once you select a start date and your application is processing, you. Complete and submit as many copies of Part 11. , as necessary, with your request. Detailed instructions for completing the I-765 are also available through the USCIS website.